glomerulonephritis Syllabification: (glo·mer·u·lo·ne·phri·tis)Pronunciation: /glōˌmeryəlōˌnəˈfrītis/Definition of glomerulonephritis noun Medicine acute inflammation of the kidney, typically caused by an immune response. glomerulonephritis in other Oxford dictionaries Definition of glomerulonephritis in the British & World English dictionary